Dispensing – With discharge assistant – Fluid pressure
Patent
1978-08-08
1980-10-28
Scherbel, David A.
Dispensing
With discharge assistant
Fluid pressure
222547, 239573, B65D 8314
Patent
active
042302439
ABSTRACT:
The invention provides a process and apparatus for delivering from a delivery port of an aerosol container having a vapor tap valve a spray of low flammability of a liquid aerosol composition containing a flammable liquefied propellant, which comprises mixing together liquid aerosol composition and gaseous propellant; subjecting the gas/liquid mixture to the constraint imposed by a flow constriction; expanding the gas/liquid mixture; subjecting the gas/liquid mixture to the constraint imposed by a second flow constriction, and again expanding the gas/liquid mixture and then passing the mixture through the remainder of the vapor tap valve to the delivery port; with each constraint and expansion increasing the gas:liquid volume ratio of the mixture and reducing the flammability of the mixture as a delivered spray.
REFERENCES:
patent: 3069098 (1962-12-01), Frangos et al.
patent: 3854636 (1974-12-01), Conway et al.
Marra Dorothea C.
Osipow Lloyd I.
Small Marvin
Spitzer Joseph G.
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